Estate sale pick up from consignment client. I do not have information on the composition of materials, or have I tested materials for any specific composition. Please do not bid or purchase if this is an issue for you. All items from the estate have been stored for a long time and may/will have tarnishing, are not in perfect condition, or need cleaning. I do not clean jewelry. I leave this up to the buyer based off of lack of material composition. I took multiple pictures and video on all jewelry. What you see is what you will get. Sold as is, with no returns. If you are concerned or have any doubts prior to purchase, please reach out prior to buying with questions. That being said some great finds!